package cn.tiancaifan.micro.utils;

import cn.tiancaifan.micro.entity.Oplog;
import cn.tiancaifan.micro.service.OplogService;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Date;

@Aspect
@Component
public class OpLogAspect {

    @Autowired
    private OplogService oplogService;

    //定义切点 @Pointcut
    //在注解的位置切入代码
    @Pointcut("@annotation(cn.tiancaifan.micro.utils.Logger)")
    public void logPoinCut() {
    }

    //切面 配置通知
    @AfterReturning("logPoinCut()")
    public void saveSysLog(JoinPoint joinPoint) {
        //保存日志
        Oplog oplog = new Oplog();

        //从切面织入点处通过反射机制获取织入点处的方法
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        //获取切入点所在的方法
        Method method = signature.getMethod();


        //获取请求的类名
        String className = joinPoint.getTarget().getClass().getName();

        //获取请求的方法名
        String methodName = method.getName();
        oplog.setMethod(className + "." + methodName);

        //请求的参数
        Object[] args = joinPoint.getArgs();
        //将参数所在的数组转换成json
        String params = null;
        try {
            params = JacksonUtil.obj2json(args);
        } catch (Exception e) {
            e.printStackTrace();
        }
        oplog.setParams(params);

        //获取操作
        Logger operation = method.getAnnotation(Logger.class);
        if (operation != null) {
            String value = operation.value();
            boolean login = operation.login();
            oplog.setOperation(value);//保存获取的操作
            if (login){
                oplog.setUsername((String) args[0]);
            }else {
                //获取用户名
                Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
                if (!(authentication instanceof AnonymousAuthenticationToken)) {
                    oplog.setUsername(authentication.getName());
                }
            }
        }

        //请求的时间
        oplog.setCreateDate(new Date());

        //获取用户ip地址
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes())
                .getRequest();
        oplog.setIp(IpAddressUtils.getIpAdrress(request));

        //调用service保存SysLog实体类到数据库
        System.out.println(oplog);
        oplogService.saveLog(oplog);

    }

}
